Thermostatically controlled curling iron



April 30, 1935. M. F. FITZGERALD THERMOSTICALLY CONTROLLED CURLING IRON Ffiled July'lZ, 1952 2 Sheets-Sheet l April 30, 1935. M. F..FITZGERALD I 1,999,893

THERMOSTICALLY CONTROLLED CURLING IRON Filed July 12, 1952 27Sheets-Sheet 2 Patented Apr. 30, 1935 7' e e i "her-fl t countes rih ewom en r Che a I MhHQflhh'fihJ-Zi: starts This application relates toe-improvements in the ester elemental! in neeitiong The slider I; ur i i on V m isproviiisd with $551.01? iZb thmush wh ch ma be One of the features ofrthe present invention assed a 56 a collar thereon tor isthe copstructionand arrangemento! a OJ-P511118 andhcl ihs the QQYBF L in 9953193, and V 5, ingironecombining'fanelectrical heater element tar the l d l to move len thw se anda thermostatically operated switch iorcone otthe hpdy.:: a, 7 trolling the supply: r current tothe heating 212+ At its shit beds i movided w th ah a a aawerdesteasiehhav hs i l ned r ace- 94 I Another feature :of the present invention re: betwe n which-hr vcd theangularly bent por-l latesitozimprpvements in thefiassemblase M a hi9?! 4:0? l 1? 1L5 F s. 3. wh h 1 1? 10. curling :iron in conjunction with avthermostatic nsluctgr tannins fimhth switch whereby aesimplevandcompant Jarrangfl: whet A m? t a??? the mosiat e W131}; meet is provided; and the thermostatic element c vit at upwardly itemi hs isso positioned that it aocuratelydetermines the osm aisaes tihaesiahih latihsblh k l5 aint: i5 heetmgegee applied tothe heir-ehsazinsend WKSJWFF??? hethermes a 9 swit h th 5* waving structures; 1 v x w ,mmfiiflu v Mi g??? 11 8 51? H v Eth features -th v nw 11 wsea 99 i? li 'hh' the @9 1 h e f, in the course of the following speoiaeatmn and e hivihetallih blad 19 has a ch ps cu es v laims, and are on the accomp nyin 3!- FWP blfid f'fi eived in i o. I H o khaki? an sc ew p se drawings, in'whichieesa: l i Figure 1 is'a. side elevation of a curling rimn according'tothevpresent invention. v 1 a j g 1 Figure? is aplan viewof the same.

.7 a isa'longitudinal section instantiauy screw Z'iihew a g a, on thegline Se-elof Figure l'z". Y t 1: M a space 211,10 in iht o e a dis he d kefd. 2s i e "4 is a:detai woirme thernwstafifi 9 P199? i .ihmevahla hymen-i i 3 controteleme'nts, one. larger scale; substantially outside 9 -h h dY 9. I on 'lineJA ofFlg'urez l. a g a I 9 A mta hc 5 1,94,81,11? Figure 5 is a transversesection substamial lyfln 1 n? t 31 335 5 ate ia 5 u h 3 1ine"5ve5 of Figure 4. y is j as mica,is positioned against it and projects lat @Figurec is a perspective viewer thethermo': heypnd t LA metal slecye qr chi: 1 static switch assembly 7* 5:19 95 strip win-these drawingsthe ourlingiron is illustrated fixedly together. j" I ashaving -three relatiyely'movable members cons- T h pp Side ll :9!- th ID is fixed prising abodylfl, tneton s iandt e h erflii rseahterh adelt w ch "she/ ihlpo'siheh 'as Theubod-y I0 is provided with transverse ribsles'l- 31%} wil gnd niay ,vari j positionby tablishing grooves forthe reception ot strands .ot the adjusting screw 30 having a lock nuFjl', the hair. The tongs H are formed inth is fliufiL-r w hits f en tq jhe trative-form' ore single s rip metal which has eieavstriaht-wherebye r 40 parallel portions at its ends spaced from the body thre at which the thermostatic device will op-' 40 I0 and adapted to be rocked about the pivot erate for Separat n the contacts 18, 20. 13 for holding the hair in the aioresaidgrooves One conductor 32 leads from'a source of curof t body The slider I: t d v th rent to the heater element 14, while the return body and tong arms, and is provided at its edges conductor ,33 from the heater element is conwith the teeth I211 for engaging th trands of nected to, one of the thermostat blades, for ex- 45 hair and moving them lengthwise with, respect p 0 t e til-me allic blade IS. The other to the ribs of the body whereby to produce a lad n su a p the s a ry ad l 1 a distortion or curling of the hair in two direcis connected by conductor 34 back to the source. tions. r '7 1 g g A hood 35, is provided for cooperation with the The body, 10 is of relatively thick material, and 7 y I0 and h cover en We p ct he'therthus serves as a heat accumulator so that its temmostatic members against accidental contactfor peraturedoes not'change rapidly; Ithas a cenderangement. This hood fits against the walls tral trough or cavity in which is located the elecor the v upward extension of the body [0 and etrical heater element I4. A cover piece I5; rests againstthe inclined surface Illa thereof so that withi the upp r po i n of t dy to hold the conductive cable cord to the device is di- 5 t e him hbdy rected backward toward the handle, but at an angle thereto, so that the conductor cord does not tend to engage the heated portions, nor to become entangled with the hair.

In this illustrative form, the slider I2 is moved by a slider lever 42 which is mounted by a pivot 43 on the body arm 44 which is fixedly connected to the body it), so that there is no relative movement of the slider lever and slider while the tongs are being closed upon the body. The end of the slider lever is connected by a link 45 with the slider member, so that the latter may be operated thereby and without contact of the hand with the heated slider l2.

For greater facility and operation, and for easy manufacture, the tongs Which are formed as indicated above of a single strip of metal, have the two arms thereof approximated adjacent the pivot l3 and then extend rearwardly and into a heat insulating handle 50, being curved relatively downward close to the handle, so that the handle axis is at an angle to the tongs.

By particular construction shown, the provision in the trough open at the top of the body in for the reception of the heater element II, and the upward .extension of this body with the cavity in extension of the trough, permits a simple and easy assemblage of the heater element and its conductors '32, 33, and the enclosure of these parts by the cover (5 and the bent end Mia. The space afforded by the upward extension is contiguous to a heated portion of the body ID, and also permits an installation of a thermostatic switch of ample size for continued service. The hood which completes the closure of the upward extension of the body It surrounds the free ends of the bi-metallic blade i9 and the stationary blade i! so that these elements are supported in a heated zone, but at a sufiicient distance from the heater element I4 proper, so that they operate according to the temperature of the body Ill and not of the heater element.

The illustrated form likewise employs an openended slot |2c on the slider l2 which fits around the extension of the body, being received in grooves I 91) thereof, so that the slider is positively guided at both ends, i. e. at the tip by the head or screw l6 in its engagement in slot I22), and at the heel end by the engagement in the grooves IUb. i

It is obvious that the invention is not limited solely to the form of construction shown, but that it may be modified within many ways of the scope of the appended claims.

Having thus described the invention, what I claim as new'and desire to secure by Letters Patent, isz- 1. A curling iron comprising an elongated trough-like body having an electrical heater element therein, a handle joined to one end of said body, tongs pivotally mounted for movement with respect to said body, an angular extension from said body adjacent the handle end and having a groove constituting an extension of the body trough, a cover member for closing said trough andhaving an upturned end for closing said extension and leaving an opening at the end of said extension, a hood for closing said opening and fitting around said extension and upturned end, and electrical connections through said hood to said element, said connections including a. thermostatic blade and cooperating blade supported on said body in said groove independent of said hood and having contacts located remote from the body on the ends of the blade extending through said opening into said hood whereby the contacts are accessible by removing said hood.

2. A curling iron comprising a pair of levers having a pivot connection, a hollow body secured to one of said pair of levers and having an electrical heating element therein and hair-engaging transverse ribs on one surface thereof, an angular extension on said body through which electrical connections pass to said heating element, a slider positioned at the opposite surface thereof and having hair-engaging teeth at its edges, said teeth being spaced from said body, said slider having an open ended slot through which said extension passes whereby to guide said slider, handle means on at least one of said pair of levers, means for moving said slider including a third lever pivoted to one of said pair of levers on an axis parallel to that of said pivot connection, and a pair of spaced tongs rigidly mounted on the other of said pair of levers for movement therewith to and from positions between said body and teeth.

3. A curling iron comprising a handle and a hollow body having an electrical heating element therein and hair-engaging transverse ribs on one surface thereof, a slider positioned at the opposite surface thereof and having hair-engaging teeth at its edges, said teeth being spaced from said body, means for moving said slider, a pair of tongs mounted for pivoting to and from positions between said body and teeth, a hollow extension at the handle end of the body directed away from said one surface, a thermostatic device including a thermostat blade, and a cooperating blade mounted on said body and positioned in said extension and projecting beyond said extension, said blades having contacts at their projecting ends remote from said ribs, a hood covering said ends, a-connection from one said blade to the 

